package com.zmr.wx.mp.handler;

import java.util.Map;

import org.springframework.stereotype.Component;

import com.zmr.wx.mp.builder.TextBuilder;

import me.chanjar.weixin.common.error.WxErrorException;
import me.chanjar.weixin.common.session.WxSessionManager;
import me.chanjar.weixin.mp.api.WxMpService;
import me.chanjar.weixin.mp.bean.message.WxMpXmlMessage;
import me.chanjar.weixin.mp.bean.message.WxMpXmlOutMessage;
import me.chanjar.weixin.mp.bean.result.WxMpUser;

/**
 * @author Binary Wang(https://github.com/binarywang)
 */
@Component
public class SubscribeHandler extends AbstractHandler
{
    @Override
    public WxMpXmlOutMessage handle(WxMpXmlMessage wxMessage, Map<String, Object> context, WxMpService weixinService,
            WxSessionManager sessionManager) throws WxErrorException
    {
        this.logger.info("新关注用户 OPENID: " + wxMessage.getFromUser());
        // 获取微信用户基本信息
        try
        {
            WxMpUser userWxInfo = weixinService.getUserService().userInfo(wxMessage.getFromUser(), null);
            if (userWxInfo != null)
            {
                // TODO 可以添加关注用户到本地数据库
            }
        }
        catch (WxErrorException e)
        {
            if (e.getError().getErrorCode() == 48001)
            {
                this.logger.info("该公众号没有获取用户信息权限！");
            }
        }
        WxMpXmlOutMessage responseResult = null;
        try
        {
            responseResult = this.handleSpecial(wxMessage);
        }
        catch (Exception e)
        {
            this.logger.error(e.getMessage(), e);
        }
        if (responseResult != null)
        {
            return responseResult;
        }
        try
        {
            return new TextBuilder().build("感谢关注\n你可以输入'指令'来看看我能为你做点啥", wxMessage, weixinService);
        }
        catch (Exception e)
        {
            this.logger.error(e.getMessage(), e);
        }
        return null;
    }

    /**
     * 处理特殊请求，比如如果是扫码进来的，可以做相应处理
     */
    private WxMpXmlOutMessage handleSpecial(WxMpXmlMessage wxMessage) throws Exception
    {
        // TODO
        return null;
    }
}
